Micromachines,
Год журнала:
2024,
Номер
15(12), С. 1456 - 1456
Опубликована: Ноя. 29, 2024
With
advancements
in
small-scale
research
fields,
precision
manipulation
has
become
crucial
for
interacting
with
small
objects.
As
progresses,
the
demand
higher
led
to
emergence
of
ultrahigh-precision
engineering
(UHPE),
which
exhibits
significant
potential
various
applications.
Traditional
rigid-body
manipulators
suffer
from
issues
like
backlash
and
friction,
limiting
their
effectiveness
at
smaller-scale
Smart
materials,
particularly
piezoelectric
offer
promising
solutions
rapid
response
high
resolution,
making
them
ideal
creating
efficient
transducers.
Meanwhile,
compliant
mechanisms,
use
elastic
deformation
transmit
force
motion,
eliminate
inaccuracies
induced
by
mechanisms.
Integrating
transducers
mechanisms
into
devices
enhances
UHPE
system
performance.
This
paper
reviews
recent
advances
devices.
By
focusing
on
utilization
applications
perception,
energy
harvesting,
actuation
have
been
surveyed,
future
suggestions
are
discussed.
Advanced Engineering Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Electrospinning
is
a
versatile
technique
for
producing
micro‐
and
nanoscale
fibers,
offering
vast
potential
to
address
critical
market
demands,
particularly
in
biomedical
engineering.
However,
the
industrial
adoption
of
electrospinning
as
manufacturing
technology
faces
significant
hurdles,
notably
achieving
precise
control
over
fiber
properties
ensuring
reproducibility
scalability.
These
challenges
directly
impact
its
viability
creating
advanced
products.
Bridging
gap
between
material
properties,
end‐user
requirements,
process
parameters
essential
unlocking
full
electrospinning.
This
work
provides
comprehensive
review
modalities,
operational
factors,
modeling
techniques,
emphasizing
their
role
optimizing
process.
The
use
strategies
machine
learning
methods
explored,
showcasing
enhance
performance.
highlights
connection
product
performance
electrospinning,
well
necessary
conditions
applications.
In
addition,
identifies
gaps
unexplored
areas,
roadmap
future
innovation
fabrication.
By
synergy
intelligent
design
applications,
this
lays
groundwork
advancements,
positioning
cornerstone
next‐generation
technologies.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 19, 2024
The
application
of
biodegradable
and
eco-friendly
poly(lactic
acid)
(PLA)
nanofibrous
membranes
(NFMs)
toward
respiratory
healthcare
has
long
been
thwarted
by
the
poor
electroactivity
low
surface
activity
PLA.
Herein,
we
unravel
a
microwave-assisted
route
to
fabricate
rod-like
ZnO
nanodielectrics,
which
were
decorated
with
dopamine
(ZnO@PDA)
anchored
at
PLA
nanofibers
via
an
electrospinning-electrospray
approach.
PLA/ZnO@PDA
NFMs
featured
substantially
elevated
specific
area
(up
20.7
m
Materials,
Год журнала:
2025,
Номер
18(3), С. 615 - 615
Опубликована: Янв. 29, 2025
With
the
advent
of
intelligent
era,
flexible
piezoelectric
tactile
sensors,
as
key
components
for
sensing
information
and
transmitting
signals,
have
received
worldwide
attention.
However,
pressure
sensors
are
still
currently
limited,
which
severely
restricts
their
practical
applications.
Furthermore,
demonstrations
conducted
in
labs
not
accurate
to
real-world
scenarios.
Thus,
there
is
an
urgent
need
further
optimize
intrinsic
performance
usage
characteristics
meet
application
requirements.
As
a
representative
piezoelectric,
polyvinylidene
fluoride
(PVDF)
exhibits
significant
advantages
terms
excellent
flexibility,
chemical
stability,
high
electromechanical
conversion,
low
cost,
appropriate
acoustic
impedance,
allow
it
serve
core
matrix
sensors.
This
paper
aims
summarize
very
recent
progress
based
on
PVDF,
including
composition
modulation,
structure
optimization,
Based
comprehensive
summary
studies,
we
propose
rational
perspectives
strategies
regarding
PVDF-based
provide
some
new
insights
research
industrial
communities.
Tactile
sensors
are
the
cornerstone
of
modern
technology
development
by
mimicking
human
tactile
perception
and
providing
precise
diverse
mechanical
feedback
for
cutting-edge
fields
such
as
robotics,
medical
equipment,
virtual
reality.
However,
current
research
predominantly
concentrates
on
monitoring
normal
forces.
How
to
accurately
recognize
decouple
multidirectional
force
pairs
remains
a
challenge.
To
this
end,
we
design
sensor
modifying
cuprous
oxide
(Cu2O)
surface
zinc
nanorods
(ZnO
NRs)
arrays
integrating
it
with
transverse
force-to-vertical
conversion
structure.
As
result,
modification
boosts
piezoelectric
output
ZnO
sensitivity
17.25
nA
MPa-1,
which
is
about
3
times
higher
that
pure
ZnO.
The
mechanism
underlying
enhancement
illustrated
from
perspective
surface-engineered
heterojunction.
On
basis,
ability
detect
forces
verified
prototype,
can
monitor
in
12
directions
over
360°
range.
This
work
provides
new
strategy
designing
sensors,
showing
broad
application
prospect
human-machine
interaction
beyond.
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 6, 2025
Abstract
A
piezoelectric
flat
panel
loudspeaker
operates
by
utilizing
a
film
actuator
to
vibrate
diaphragm,
offering
advantages
in
miniaturization,
embedding,
and
spatial
efficiency.
However,
achieving
high
sound
pressure
levels
(SPL)
at
low
frequencies
maintaining
frequency
response
remains
challenging.
This
study
presents
Conical
Shellular
Sandwich
Diaphragm
(CSSD),
derived
from
conical
shellular
metamaterials,
which
combines
lightweight
properties
with
stiffness.
The
CSSD
enhances
low‐frequency
SPL
improves
flatness
through
structural
optimization,
eliminating
the
need
for
complex
systems.
Finite
element
analysis
identifies
optimal
geometric
parameters
unit
cell,
resulting
an
11.5
dB
increase
53%
reduction
peak‐dip
deviation
across
200
Hz–20
kHz
range,
compared
conventional
Flat
Panel
(FPD).
These
enhancements
stem
CSSD's
effective
mass
(
m
eff
)
one‐hundredth
of
equivalent‐volume
FPD
bulk
modulus
k
relative
structures
same
mass.
Experimental
tests
3D‐printed
prototypes
integrated
actuators
match
simulation
results.
demonstrates
potential
mechanical
metamaterials
address
design
limitations
loudspeakers,
enabling
improved
quality
simpler
configurations
commercial
use.
